A COMPACT, ULTRA-BROADBAND COPLANAR-WAVEGUIDE BANDPASS FILTER WITH SIMPLE OPEN- AND SHORT-STUB STRUCTURES

摘要

A compact, ultra-broadband coplanar-waveguide (CPW) bandpass filter (BPF) is presented. The CPW-BPF comprises solely open- and short-stub structures. Compared with the conventional broadband CPW-BPFs, the proposed filter is of a relatively compact configuration. The demonstrated CPW-BPF has about 110% 3-dB fractional bandwidth, sharp selectivity, and good stopband rejection.